Gahnite and Apatite Physical Properties

Gahnite

Apatite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

4.00-4.623.16-3.23

1 7.18

1.5 Fracture

Conchoidal, Uneven

Conchoidal, Uneven, Conchoidal, Brittle, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal to uneven

1.6 Cleavage

Indistinct parting on [111]

[0001] indistinct, [1010] indistinct

1.7 Mohs Hardness

7.5-85

2 10

1.8 Chemical Composition

ZnAl 2O 4Michael OâDonoghue , Gems, Sixth Edition (2006)

Ca 5(PO 4) 3(F,OH,Cl)Walter Schumann , Gemstones of the world (2001) More from other references

Gahnite and Apatite Chemical Formula

While comparing Gahnite and Apatite physical properties, the important data you should know is its chemical composition. Since chemical formula defines the molecular structure of the crystal, most of the physical properties like color, tenacity, solubility are governed by Gahnite and Apatite chemical formula.

Chemical formula of Gahnite- ZnAl 2O 4Michael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Apatite- Ca 5(PO 4) 3(F,OH,Cl)Walter Schumann , Gemstones of the world (2001) More from other references

Compare Blue Gemstones

Gahnite Vs Hydrogrossular

Gahnite Vs Indicolite Blue Tourmaline

Gahnite Vs Howlite

Gahnite and Apatite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Gahnite and Apatite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Gahnite and Apatite Optical Properties during the identification of gemstone. Specific gravity of Gahnite is 3.16-3.23 whereas that of Apatite is 3.16-3.23.